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60#define USLEEP_POLL msecs_to_jiffies(10)
61#define USLEEP_SLEEP msecs_to_jiffies(200)
62#define USLEEP_WAITLONG msecs_to_jiffies(5000)
63
64#define AUTOPROBE_IRQ
65
66#ifdef CONFIG_SCSI_GENERIC_NCR53C400
67#define NCR53C400_PSEUDO_DMA 1
68#define PSEUDO_DMA
69#define NCR53C400
70#endif
71
72#include <asm/io.h>
73#include <linux/signal.h>
74#include <linux/blkdev.h>
75#include <scsi/scsi_host.h>
76#include "g_NCR5380.h"
77#include "NCR5380.h"
78#include <linux/stat.h>
79#include <linux/init.h>
80#include <linux/ioport.h>
81#include <linux/isapnp.h>
82#include <linux/delay.h>
83#include <linux/interrupt.h>
84
85#define NCR_NOT_SET 0
86static int ncr_irq = NCR_NOT_SET;
87static int ncr_dma = NCR_NOT_SET;
88static int ncr_addr = NCR_NOT_SET;
89static int ncr_5380 = NCR_NOT_SET;
90static int ncr_53c400 = NCR_NOT_SET;
91static int ncr_53c400a = NCR_NOT_SET;
92static int dtc_3181e = NCR_NOT_SET;
93
94static struct override {
95 NCR5380_map_type NCR5380_map_name;
96 int irq;
97 int dma;
98 int board;
99} overrides
100#ifdef GENERIC_NCR5380_OVERRIDE
101[] __initdata = GENERIC_NCR5380_OVERRIDE;
102#else
103[1] __initdata = { { 0,},};
104#endif
105
106#define NO_OVERRIDES ARRAY_SIZE(overrides)
107
108#ifndef MODULE
109
110
111
112
113
114
115
116
117
118
119
120
121
122static void __init internal_setup(int board, char *str, int *ints)
123{
124 static int commandline_current = 0;
125 switch (board) {
126 case BOARD_NCR5380:
127 if (ints[0] != 2 && ints[0] != 3) {
128 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
129 return;
130 }
131 break;
132 case BOARD_NCR53C400:
133 if (ints[0] != 2) {
134 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
135 return;
136 }
137 break;
138 case BOARD_NCR53C400A:
139 if (ints[0] != 2) {
140 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
141 return;
142 }
143 break;
144 case BOARD_DTC3181E:
145 if (ints[0] != 2) {
146 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
147 return;
148 }
149 break;
150 }
151
152 if (commandline_current < NO_OVERRIDES) {
153 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
154 overrides[commandline_current].irq = ints[2];
155 if (ints[0] == 3)
156 overrides[commandline_current].dma = ints[3];
157 else
158 overrides[commandline_current].dma = DMA_NONE;
159 overrides[commandline_current].board = board;
160 ++commandline_current;
161 }
162}
163
164
165
166
167
168
169
170
171
172
173static int __init do_NCR5380_setup(char *str)
174{
175 int ints[10];
176
177 get_options(str, ARRAY_SIZE(ints), ints);
178 internal_setup(BOARD_NCR5380, str, ints);
179 return 1;
180}
181
182
183
184
185
186
187
188
189
190
191static int __init do_NCR53C400_setup(char *str)
192{
193 int ints[10];
194
195 get_options(str, ARRAY_SIZE(ints), ints);
196 internal_setup(BOARD_NCR53C400, str, ints);
197 return 1;
198}
199
200
201
202
203
204
205
206
207
208
209static int __init do_NCR53C400A_setup(char *str)
210{
211 int ints[10];
212
213 get_options(str, ARRAY_SIZE(ints), ints);
214 internal_setup(BOARD_NCR53C400A, str, ints);
215 return 1;
216}
217
218
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225
226
227static int __init do_DTC3181E_setup(char *str)
228{
229 int ints[10];
230
231 get_options(str, ARRAY_SIZE(ints), ints);
232 internal_setup(BOARD_DTC3181E, str, ints);
233 return 1;
234}
235
236#endif
237
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239
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242
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249
250
251
252static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
253{
254 static int current_override = 0;
255 int count;
256 unsigned int *ports;
257#ifndef SCSI_G_NCR5380_MEM
258 int i;
259 unsigned long region_size = 16;
260#endif
261 static unsigned int __initdata ncr_53c400a_ports[] = {
262 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
263 };
264 static unsigned int __initdata dtc_3181e_ports[] = {
265 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
266 };
267 int flags = 0;
268 struct Scsi_Host *instance;
269#ifdef SCSI_G_NCR5380_MEM
270 unsigned long base;
271 void __iomem *iomem;
272#endif
273
274 if (ncr_irq != NCR_NOT_SET)
275 overrides[0].irq = ncr_irq;
276 if (ncr_dma != NCR_NOT_SET)
277 overrides[0].dma = ncr_dma;
278 if (ncr_addr != NCR_NOT_SET)
279 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
280 if (ncr_5380 != NCR_NOT_SET)
281 overrides[0].board = BOARD_NCR5380;
282 else if (ncr_53c400 != NCR_NOT_SET)
283 overrides[0].board = BOARD_NCR53C400;
284 else if (ncr_53c400a != NCR_NOT_SET)
285 overrides[0].board = BOARD_NCR53C400A;
286 else if (dtc_3181e != NCR_NOT_SET)
287 overrides[0].board = BOARD_DTC3181E;
288#ifndef SCSI_G_NCR5380_MEM
289 if (!current_override && isapnp_present()) {
290 struct pnp_dev *dev = NULL;
291 count = 0;
292 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
293 if (count >= NO_OVERRIDES)
294 break;
295 if (pnp_device_attach(dev) < 0)
296 continue;
297 if (pnp_activate_dev(dev) < 0) {
298 printk(KERN_ERR "dtc436e probe: activate failed\n");
299 pnp_device_detach(dev);
300 continue;
301 }
302 if (!pnp_port_valid(dev, 0)) {
303 printk(KERN_ERR "dtc436e probe: no valid port\n");
304 pnp_device_detach(dev);
305 continue;
306 }
307 if (pnp_irq_valid(dev, 0))
308 overrides[count].irq = pnp_irq(dev, 0);
309 else
310 overrides[count].irq = NO_IRQ;
311 if (pnp_dma_valid(dev, 0))
312 overrides[count].dma = pnp_dma(dev, 0);
313 else
314 overrides[count].dma = DMA_NONE;
315 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
316 overrides[count].board = BOARD_DTC3181E;
317 count++;
318 }
319 }
320#endif
321 tpnt->proc_name = "g_NCR5380";
322
323 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
324 if (!(overrides[current_override].NCR5380_map_name))
325 continue;
326
327 ports = NULL;
328 switch (overrides[current_override].board) {
329 case BOARD_NCR5380:
330 flags = FLAG_NO_PSEUDO_DMA;
331 break;
332 case BOARD_NCR53C400:
333 flags = FLAG_NCR53C400;
334 break;
335 case BOARD_NCR53C400A:
336 flags = FLAG_NO_PSEUDO_DMA;
337 ports = ncr_53c400a_ports;
338 break;
339 case BOARD_DTC3181E:
340 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
341 ports = dtc_3181e_ports;
342 break;
343 }
344
345#ifndef SCSI_G_NCR5380_MEM
346 if (ports) {
347
348
349
350 outb(0x59, 0x779);
351 outb(0xb9, 0x379);
352 outb(0xc5, 0x379);
353 outb(0xae, 0x379);
354 outb(0xa6, 0x379);
355 outb(0x00, 0x379);
356
357 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
358 for (i = 0; ports[i]; i++) {
359 if (!request_region(ports[i], 16, "ncr53c80"))
360 continue;
361 if (overrides[current_override].NCR5380_map_name == ports[i])
362 break;
363 release_region(ports[i], 16);
364 } else
365 for (i = 0; ports[i]; i++) {
366 if (!request_region(ports[i], 16, "ncr53c80"))
367 continue;
368 if (inb(ports[i]) == 0xff)
369 break;
370 release_region(ports[i], 16);
371 }
372 if (ports[i]) {
373
374 outb(0x59, 0x779);
375 outb(0xb9, 0x379);
376 outb(0xc5, 0x379);
377 outb(0xae, 0x379);
378 outb(0xa6, 0x379);
379 outb(0x80 | i, 0x379);
380 outb(0xc0, ports[i] + 9);
381 if (inb(ports[i] + 9) != 0x80)
382 continue;
383 else
384 overrides[current_override].NCR5380_map_name = ports[i];
385 } else
386 continue;
387 }
388 else
389 {
390
391 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
392 continue;
393 region_size = NCR5380_region_size;
394 }
395#else
396 base = overrides[current_override].NCR5380_map_name;
397 if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
398 continue;
399 iomem = ioremap(base, NCR5380_region_size);
400 if (!iomem) {
401 release_mem_region(base, NCR5380_region_size);
402 continue;
403 }
404#endif
405 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
406 if (instance == NULL) {
407#ifndef SCSI_G_NCR5380_MEM
408 release_region(overrides[current_override].NCR5380_map_name, region_size);
409#else
410 iounmap(iomem);
411 release_mem_region(base, NCR5380_region_size);
412#endif
413 continue;
414 }
415
416 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
417#ifndef SCSI_G_NCR5380_MEM
418 instance->n_io_port = region_size;
419#else
420 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
421#endif
422
423 NCR5380_init(instance, flags);
424
425 if (overrides[current_override].irq != IRQ_AUTO)
426 instance->irq = overrides[current_override].irq;
427 else
428 instance->irq = NCR5380_probe_irq(instance, 0xffff);
429
430
431 if (instance->irq == 255)
432 instance->irq = NO_IRQ;
433
434 if (instance->irq != NO_IRQ)
435 if (request_irq(instance->irq, generic_NCR5380_intr,
436 0, "NCR5380", instance)) {
437 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
438 instance->irq = NO_IRQ;
439 }
440
441 if (instance->irq == NO_IRQ) {
442 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
443 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
444 }
445
446 ++current_override;
447 ++count;
448 }
449 return count;
450}
451
452
453
454
455
456
457
458
459
460
461static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
462{
463 NCR5380_local_declare();
464 NCR5380_setup(instance);
465
466 if (instance->irq != NO_IRQ)
467 free_irq(instance->irq, instance);
468 NCR5380_exit(instance);
469
470#ifndef SCSI_G_NCR5380_MEM
471 release_region(instance->NCR5380_instance_name, instance->n_io_port);
472#else
473 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
474 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
475#endif
476
477
478 return 0;
479}
480
481#ifdef BIOSPARAM
482
483
484
485
486
487
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489
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491
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493
494
495
496
497
498
499static int
500generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
501 sector_t capacity, int *ip)
502{
503 ip[0] = 64;
504 ip[1] = 32;
505 ip[2] = capacity >> 11;
506 return 0;
507}
508#endif
509
510#ifdef NCR53C400_PSEUDO_DMA
511
512
513
514
515
516
517
518
519
520
521
522static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
523{
524 int blocks = len / 128;
525 int start = 0;
526 int bl;
527
528 NCR5380_local_declare();
529 NCR5380_setup(instance);
530
531 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
532 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
533 while (1) {
534 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
535 break;
536 }
537 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
538 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
539 return -1;
540 }
541 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
542
543#ifndef SCSI_G_NCR5380_MEM
544 {
545 int i;
546 for (i = 0; i < 128; i++)
547 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
548 }
549#else
550
551 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
552#endif
553 start += 128;
554 blocks--;
555 }
556
557 if (blocks) {
558 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
559 {
560
561 }
562
563#ifndef SCSI_G_NCR5380_MEM
564 {
565 int i;
566 for (i = 0; i < 128; i++)
567 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
568 }
569#else
570
571 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
572#endif
573 start += 128;
574 blocks--;
575 }
576
577 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
578 printk("53C400r: no 53C80 gated irq after transfer");
579
580#if 0
581
582
583
584 printk("53C400r: Waiting for 53C80 registers\n");
585 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
586 ;
587#endif
588 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
589 printk(KERN_ERR "53C400r: no end dma signal\n");
590
591 NCR5380_write(MODE_REG, MR_BASE);
592 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
593 return 0;
594}
595
596
597
598
599
600
601
602
603
604
605
606static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
607{
608 int blocks = len / 128;
609 int start = 0;
610 int bl;
611 int i;
612
613 NCR5380_local_declare();
614 NCR5380_setup(instance);
615
616 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
617 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
618 while (1) {
619 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
620 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
621 return -1;
622 }
623
624 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
625 break;
626 }
627 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
628 ;
629#ifndef SCSI_G_NCR5380_MEM
630 {
631 for (i = 0; i < 128; i++)
632 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
633 }
634#else
635
636 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
637#endif
638 start += 128;
639 blocks--;
640 }
641 if (blocks) {
642 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
643 ;
644
645#ifndef SCSI_G_NCR5380_MEM
646 {
647 for (i = 0; i < 128; i++)
648 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
649 }
650#else
651
652 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
653#endif
654 start += 128;
655 blocks--;
656 }
657
658#if 0
659 printk("53C400w: waiting for registers to be available\n");
660 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
661 printk("53C400w: Got em\n");
662#endif
663
664
665
666
667
668 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
669 ;
670
671
672
673
674
675 if (i) {
676 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
677 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
678 } else
679 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
680
681#if 0
682 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
683 printk(KERN_ERR "53C400w: no end dma signal\n");
684 }
685#endif
686 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
687 ;
688 return 0;
689}
690#endif
691
692
693
694
695
696#include "NCR5380.c"
697
698static struct scsi_host_template driver_template = {
699 .show_info = generic_NCR5380_show_info,
700 .name = "Generic NCR5380/NCR53C400 SCSI",
701 .detect = generic_NCR5380_detect,
702 .release = generic_NCR5380_release_resources,
703 .info = generic_NCR5380_info,
704 .queuecommand = generic_NCR5380_queue_command,
705 .eh_abort_handler = generic_NCR5380_abort,
706 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
707 .bios_param = NCR5380_BIOSPARAM,
708 .can_queue = CAN_QUEUE,
709 .this_id = 7,
710 .sg_tablesize = SG_ALL,
711 .cmd_per_lun = CMD_PER_LUN,
712 .use_clustering = DISABLE_CLUSTERING,
713};
714#include <linux/module.h>
715#include "scsi_module.c"
716
717module_param(ncr_irq, int, 0);
718module_param(ncr_dma, int, 0);
719module_param(ncr_addr, int, 0);
720module_param(ncr_5380, int, 0);
721module_param(ncr_53c400, int, 0);
722module_param(ncr_53c400a, int, 0);
723module_param(dtc_3181e, int, 0);
724MODULE_LICENSE("GPL");
725
726#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE)
727static struct isapnp_device_id id_table[] = {
728 {
729 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
730 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
731 0},
732 {0}
733};
734
735MODULE_DEVICE_TABLE(isapnp, id_table);
736#endif
737
738__setup("ncr5380=", do_NCR5380_setup);
739__setup("ncr53c400=", do_NCR53C400_setup);
740__setup("ncr53c400a=", do_NCR53C400A_setup);
741__setup("dtc3181e=", do_DTC3181E_setup);
742